It was the done thing years ago, and possibly still is to play multiple tables to make the most money from Poker, but not for me personally. I noticed a big difference playing multiple tables in my win rate, as it was always less when I had half a dozen tables open, as to only playing one table at a time.
I had time to think about certain situations, and concentrating on one table I made better choices, some days I would be running at 50% win rate, but saying that I mean I made the money in 50% not actually winning the game but making the money in about half the games.
Multi-tables I made the money in a lot fewer games because of not having enough time to think through the opening action, also miss-clicking, and folding hands I should have played or calling bets I should have folded.
I find Poker stops being a fun game when you are really working hard to play multiple tables and play your best game all the time, it is just not possible for me, so I will continue playing one game at a time, taking my time to make the right decisions, at the right time and finishing in the money more often.
When the fun Stops, STOP!